ONWASA bill pay works through the Orange Water and Sewer Authority's website, by phone, or by mail — and you can set up automatic payments to avoid late fees.

ONWASA (Orange Water and Sewer Authority) serves parts of Orange County, North Carolina, including Chapel Hill, Carrboro, and surrounding areas. You can pay your bill online through their customer portal, over the phone with a representative, by automatic bank draft, or by mailing a check. The online method is fastest and shows your payment status immediately.

Your bill arrives monthly and shows your water usage, sewer charges, and any other service fees. Payment is due by the date printed on your bill — typically 15 to 20 days after the bill date. If you miss the due date, ONWASA charges a late fee and may eventually shut off service if the account falls too far behind.

Key Takeaways

  • Pay online at ONWASA's customer portal using your account number and a bank account or credit card, and your payment posts within one business day.
  • Set up automatic monthly payments through the portal so you never miss a due date and avoid reconnection fees.
  • Call ONWASA's customer service line to pay by phone with a debit or credit card if you do not have online access.
  • Mail a check to ONWASA's billing address at least one week before your due date to account for postal delays.
  • If your service is shut off for non-payment, you will owe the bill amount plus a reconnection fee before water is restored.

How to Pay Online Through the ONWASA Portal

Visit the ONWASA website and log into the customer portal using your account number and password. If you do not have a portal account yet, you can create one by entering your account number and the service address. Once logged in, you will see your current balance, recent payment history, and usage details.

Click the "Pay Now" or "Make a Payment" button and enter the amount you want to pay. You can pay the full balance, a partial amount, or set up a one-time payment for a future date. ONWASA accepts payments from a checking or savings account (no fee) or a credit or debit card (a small processing fee applies). Enter your payment information, review the details, and submit. You will receive a confirmation number immediately, and the payment will post to your account within one business day.

Setting Up Automatic Payments to Avoid Late Fees

Automatic payments are the easiest way to ensure you never miss a due date. In the ONWASA customer portal, select "Autopay" or "Automatic Payments" and choose the amount and frequency. You can set it to pay the full bill each month on a date you choose, or a fixed amount if you prefer to pay extra toward your balance.

Automatic payments draw from your bank account on the date you select, usually a few days before your bill is due. This gives you a buffer if there are any processing delays. You can change or cancel automatic payments anytime through the portal, and ONWASA will send you a confirmation email when the payment is processed each month.

Paying by Phone or Mail

If you prefer not to use the online portal, call ONWASA's customer service line at the number on your bill. A representative will take your account number and payment information over the phone. You can pay with a debit or credit card, but a processing fee applies. The payment posts within one business day.

To pay by mail, write a check payable to ONWASA and include your account number on the check. Mail it to the address shown on your bill — typically ONWASA's billing office in Chapel Hill. Send your payment at least one week before the due date to allow time for the mail to arrive and be processed. ONWASA will not consider your payment made until it is received and recorded, so late mail can result in a late fee.

What Happens If You Miss a Payment

If your payment does not arrive by the due date, ONWASA will charge a late fee, usually a percentage of your bill or a flat amount (check your bill for the exact fee). Your account will show as past due, and you will receive a notice in the mail. You can still pay online, by phone, or by mail to bring your account current.

If your account remains unpaid for 30 to 60 days (the exact timeline is in ONWASA's service rules), ONWASA may shut off your water service. To restore service, you must pay the full outstanding balance plus a reconnection fee, which is separate from your regular bill. This fee can be substantial, so paying as soon as you receive a past-due notice is important.

Understanding Your ONWASA Bill

Your ONWASA bill shows your account number, service address, and the billing period covered. The main charges are water (based on how many gallons you used) and sewer service (usually a fixed monthly fee plus a usage charge). Some bills also include stormwater fees, meter fees, or other service charges depending on your location and service type.

The bill shows your current charges, any previous balance you still owe, and the total amount due. It also lists your due date and the address where to send a check payment. If you have questions about specific charges, call ONWASA's customer service — they can explain usage spikes or help you understand fees.

Lowering Your ONWASA Bill

Your water bill is based on usage, so reducing how much water you use will lower your charges. Check for leaks inside your home (running toilets, dripping faucets) and outside (broken irrigation lines, leaking hose connections). A small leak can waste thousands of gallons per month and show up as a sudden spike on your bill.

ONWASA offers a leak detection service — call their customer service line to request a meter check if you suspect a leak. They can also provide information about water-saving fixtures and rebates for replacing old toilets or showerheads. Some customers also ask ONWASA about budget billing, which spreads your annual charges evenly across 12 months so your bill is the same each month instead of varying with seasonal usage.

Frequently Asked Questions

Can I pay my ONWASA bill with a credit card online?

Yes, but ONWASA charges a processing fee when you pay with a credit or debit card through their portal or by phone. Paying from a bank account (checking or savings) has no fee. The fee is typically 2 to 3 percent of your payment amount, so it is usually cheaper to pay from your bank account if you have one.

What if I do not receive my ONWASA bill in the mail?

Log into the ONWASA customer portal to view your current balance and due date. You can also call ONWASA's customer service line and ask them to email or mail a duplicate bill. Do not wait for the bill to arrive — if you know your account number, you can pay online or by phone anytime.

How do I change my ONWASA mailing address or contact information?

Update your address in the ONWASA customer portal under account settings, or call customer service and provide your new address. Changes usually take effect on your next bill. If you are moving, notify ONWASA at least a few days before you leave so they can close your account and you will not be charged for service you do not use.

What if my water service is shut off and I cannot pay the full amount right away?

Contact ONWASA's customer service immediately. Some areas have hardship programs or payment plans for customers who cannot pay in full. ONWASA may work with you on a schedule, but you must call before service is shut off — waiting until after disconnection makes it harder to negotiate and adds a reconnection fee.

Can I set up automatic payments for a different amount each month?

No, automatic payments through the ONWASA portal are set to a fixed amount each month. If your usage varies significantly by season, you can set up automatic payments for a lower amount and pay the difference manually in high-usage months, or you can turn off autopay and pay manually each month. Call ONWASA if you want to discuss a budget billing option.